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Finding the Fourth Proportional to 287,560.28, 396,796.38 and 166,684.88

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Solution

The fourth proportional to 287,560.28, 396,796.38 and 166,684.88 is: 230,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,560.28 : 396,796.38 = 166,684.88 : x
  2. Step 2: Convert to fraction form
    287,560.28/396,796.38 = 166,684.88/x
  3. Step 3: Cross multiply
    287,560.28x = 396,796.38 × 166,684.88
  4. Step 4: Simplify right side
    287,560.28x = 66,139,956,984.73
  5. Step 5: Solve for x
    x = 66,139,956,984.73/287,560.28
  6. Step 6: Final answer
    x = 230,003.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.